1991 Merlin Metalworks Mountain Base

Design
Flat Bar, Rigid, suspension corrected
Frame
Titanium
Fork
Steel
Features
Rim brake
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

13
15.0
17
19
21
Stack
486.8mm
494.9mm
515.7mm
545.1mm
547mm
Reach
385.9mm
409.3mm
423.6mm
427mm
453.8mm
Stack to Reach Ratio
1.26:1
1.21:1
1.22:1
1.28:1
1.21:1
Seat Tube Length, Effective Center
406.4mm
469.9mm
508mm
546.1mm
584.2mm
Top Tube Length, Actual C-C
520.7mm
558.8mm
584.2mm
584.2mm
622.3mm
Head Tube Angle
70deg
70.5deg
71deg
71.5deg
72deg
Seat Tube Angle
73.5deg
73.5deg
73deg
72.5deg
72deg
Head Tube Length
85.9mm
95.3mm
120.7mm
152.4mm
152.4mm
Bottom Bracket Drop
40.7mm
38.2mm
33.1mm
30.6mm
30.6mm
Bottom Bracket Height
292.1mm
294.6mm
299.7mm
302.3mm
302.3mm
Chainstay Length
425.5mm
425.5mm
425.5mm
425.5mm
425.5mm
Chainstay Length Horizontal
423.5mm
423.7mm
424.2mm
424.4mm
424.4mm
Front-Center
596.4mm
618.9mm
637.2mm
646.2mm
668.6mm
Front-Center Horizontal
595.1mm
617.7mm
636.3mm
645.5mm
667.9mm
Wheelbase
1018.5mm
1041.4mm
1060.5mm
1069.8mm
1092.2mm
Fork Offset/Rake
44mm
44mm
44mm
44mm
44mm
Fork Length (Axle-To-Crown)
387.3mm
387.3mm
387.3mm
387.3mm
387.3mm
Trail
74.3mm
high
71.2mm
high
68.1mm
high
65mm
mid/​neutral
61.9mm
mid/​neutral
Mechanical Trail
69.8mm
67.1mm
64.4mm
61.6mm
58.9mm
Wheel Flop
23.9mm
22.4mm
21mm
19.6mm
18.2mm
Standover Height
679.5mm
704.9mm
730.3mm
803.4mm
828.8mm
Tire to Pedal Spindle
93.6mm
170 mm cranks
116mm
170 mm cranks
134.3mm
170 mm cranks
143.4mm
170 mm cranks
165.7mm
170 mm cranks
Pedal Spindle to Ground Clearance
122.1mm
170 mm cranks
124.6mm
170 mm cranks
129.7mm
170 mm cranks
132.3mm
170 mm cranks
132.3mm
170 mm cranks

Base Build

13
15.0
17
19
21
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
2.1in
2.1in
2.1in
2.1in
2.1in
Tire Width Max
2.3in
2.3in
2.3in
2.3in
2.3in
Tire Outer Diameter
665.7mm
665.7mm
665.7mm
665.7mm
665.7mm
Bike Length with Tires
1684.2mm
1707.1mm
1726.1mm
1735.5mm
1757.9mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Source:https://merlintitanium.com/images/merlin/misc/merlin_1991_catalog_specs.pdf